Antiskidding device.



A. L. mm.

ANTISKIDDING DEVICE.

I TION FILED JAN. I7. I9I3 APPL 1,244,244. Patented 001;. 23, 1917.

(E E i .wu-Q, i nl -mm @was @time ANDREW, I..` BIKER, or FAIRFIELD,coNnncTIcunnssIGNon To Tian, LoccnxIoBILI-iv 'COMPANY on AMERICA,

VIRGINIA. y f

To all whom tmdg/fconccrn -"`f^ Y *Be it known that LANbREiwL. BIKER,acitizeny of the United States, andra resident of Fairfield, countyV ofFairfield, State of Connecticut, have invented an'lmprovement inn-tiskidding Devices, of which the fol--l lowing description, inconnection-with'the accompanying drawings, 'is'A` a specification, likecharacters on' the drawings representing likeparts. f This inventionrelates to anti-skidding devices, being more particularly, though' notexclusively, intended" for use'y in "connection with'the tires ofheavy,self-propelled vehicles. The invention will be best understood byreference to the followingL description when taken in connection withthe accompanying illustration of one specic embodiment thereof, whileits scope will be more particularly pointed out in the appended claims.

In the drawings:

Figure l shows in end elevation one type of vehicle tire to which therehas been applied an anti-skidding device embodying one form of myinvention,

Fig. 2 is a longitudinal section in elevation on a larger scale takenthrough the center of one of the anti-skidding boxes shown in Fig. l;

Fig. 3 is a similar section in plan; and

Fig. 4 is a transverse section taken on the line H in Fig. 3 and showingalso the adjacent tire members in section.V

Referring to the drawings and to the illustrative embodiment of theinvention therein shown, the same is represented as being applied to aform of tire embodying the solid,

twin tire members 1 and 2 mounted in any suitable manner upon the wheelrim 3, there being left between them a circumferential space or groovewherein the sides of the tires approach each other in a generallyconverging relation toward the wheel rim. This form of tire is simplyillustrative of many different types of vehicle tires and it will beevident that my invention, when applied to types other than the oneherein shown, will undergo suitable and appropriate modification.

Referring to the form of the invention shown, the anti-skiddingattachment is composed of a series of anti-skidding members adapted topresent anti-skidding projections about the tread of the tire. Hereinsuch speci.11caticnp of Letters Patent.

'rateiitiioe23,4947.

erably yielding wallsV of )the tires`,1`th'ey are 'so loe'ate'das topresent'lanti-skidding edges 6 which are located adjacent the treadsurfaceofthe tire.- Hereinfth'eyareso "arranged "thaty they projectslightly beyondthe I tread ofthe-tira Y Y 'These'a'n'ti-skid members arevarranged at suitable intervals about the periphery of the tire, -b'eingheldin position byv any suitable means such as' the chain 7. As shown inthe drawings theends of the boxes have eacha narrow slot to receivey alink of the chain. To prevent :relative displacement of ythe chain andthe boxes a pin 8 may be employed at each opposite end of the box, suchpin passing through the side of the box and through the opening in thelink where the latter is located in the slot.

The boxes may be initially installed and drawn tightly into position byemploying a turn-buckle 9 between two of the boxes and this may also beemployed to quickly remove the anti-skidding attachment for purposes ofrepair or other reasons, or to vary the tension on the chain. The sizeand shape of the anti-skidding members and the extent to which theyproject will obviously be varied according to the shape, form, size andresiliency of the tires and the size and weight of the vehicle. 'f

The employment of box like members or those having closed or continuoussides provides projecting members which not only produce ananti-skidding eect but also afford more or less tractive effort. Thus,in the specific structure shown the longitudinal edges provide effectiveanti-skidding edges, while the transverse edges afford tractive efortand the whole constitutes a very light structure into which the chain isadapted to fit and prevent the circumferential displacement of themembers. The bottom of the box like member may be left open or partlyopen, as shown, so that the relative movement between the walls of thetire and the anti-skidding device will tend to displace any dirt or mudwhich may tend to accumulate in the device.

While I have herein shovvn for purposes of illustration one specificform of the invention, it is to be understood that the same is notlimited to the constructional details shown, but that extensivedeviations may be made therefrom Without departing from the spirit ofthe invention.

'Claims f l. An attachment for dual tread tires comprising a pluralityof segmental, channel shaped members constructed to fit be-V tvveen thetire treads and presenting the edges of the channels to the groundadjacent the Working surfaces of the tire treads, cross Webs havingvopen ended slots uniting and bracing the Walls of the channels and acircumferential binding member having portions entering said slots andadjacent portions engageable with the Webs adjacent the slots. v

2. An attachment for dual tread tires comprising a plurality ofsegmental, channel shaped members constructed to fit between the tiretreads andvpresenting the edges of the channels to the ground adjacentthe Working surfaces of the tire treads, cross Webs having open endedslots uniting and bracing the Walls of the channels and acircumferential binding member of irregular section and presenting inalternation portions receivable in and portions Wider than said slots,said members being disposed in spaced relation on said binding member.

3. An attachment for dual tires comprising, in combination, a pluralityof antiskidding members adapted tov fit between the tires and be therebymaintained in spaced relation to the Wheel rim, said members being inthe form of open topped boxes having side Walls presenting biting edgesat the tread surface and transverse Walls between said side Walls alsopresenting biting edges atthe tread surface, said members havingopenings toWard the center of the Wheel to permit escape of dirt to thegroove between the tires whereby said biting `edges are maintained clearand efficient, and means for retaining said members in place. y j Intestimony whereof, I have signed my name to this specification, in thepresence of two subscribing Witnesses. Y

ANDREW L. RIKER.

Witnesses:

WM. S. TEEL. B., J. CoNNoLLY.

Copies of this patent may 'be obtained for five cents each, byaddressing'zhe Commissioner of atents,

Washingtemb.

